MEGADETH's Dave Mustaine and Glen Drover performed acoustically in the park outside their hotel in Buenos Aires, Argentina on Saturday, October 8. The setlist for this special performance, which was reportedly attended by around 200 fans, consisted of the following songs (in no particular order):

MEGADETH are in the middle of a South American tour in support of their "The System Has Failed" album, which came out in September 2004. The latest MEGADETH release, "Greatest Hits: Back to the Start" (Capitol), entered the Billboard chart at No. 65 and has sold 95,000 copies in the United States, according to Nielsen SoundScan.